김경종
72 lines
2.9 KiB
Markdown
72 lines
2.9 KiB
Markdown
---
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type: concept
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title: "Abaqus Surface-Based Constraints and Couplings"
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complexity: advanced
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domain: computational-mechanics
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created: 2026-06-01
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updated: 2026-06-01
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address: c-000121
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aliases:
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- Abaqus tie constraints
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- Abaqus coupling constraints
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- Abaqus shell-to-solid coupling
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tags:
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- concept
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- finite-element-method
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- abaqus
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- constraints
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- surface-based-modeling
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status: current
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related:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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- "[[Abaqus Kinematic Constraints and MPCs]]"
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- "[[Abaqus Surface and Assembly Modeling]]"
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- "[[Finite Element Contact Formulation]]"
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- "[[Abaqus Structural Element Families]]"
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sources:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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source_refs:
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- source: "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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raw_path: ".raw/AbaqusAnalysisUserGuide5/"
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raw_files:
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- "AbaqusAnalysisUserGuide5_034.md"
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- "AbaqusAnalysisUserGuide5_033.md"
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- "AbaqusAnalysisUserGuide5_039.md"
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- "AbaqusAnalysisUserGuide5_032.md"
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md_indices:
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- 34
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- 33
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- 39
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- 32
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match: "heuristic-heading-keyword"
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confidence: high
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---
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# Abaqus Surface-Based Constraints and Couplings
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## Definition
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Abaqus surface-based constraints and couplings enforce kinematic relationships over named surfaces or regions rather than only between individual nodes.
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## How They Work
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Tie constraints join two separate surfaces so that relative motion is removed, often allowing dissimilar meshes to be connected. Coupling constraints relate a surface or node set to a reference point using either kinematic or distributing behavior. Shell-to-solid coupling transfers motion between shell edges and solid faces when structural and continuum regions meet.
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Surface-to-surface tie constraints enforce compatibility in an averaged sense over a finite region. This can reduce numerical noise when meshes do not match, but it also makes surface definition, normal direction, and interaction order important.
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## Why It Matters
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Surface-based constraints are production tools for connecting independently meshed regions, idealized structures, and reference points. They prevent mesh compatibility from becoming a hard requirement, but they can compete with contact or boundary conditions if regions overlap.
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## Connections
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- [[Abaqus Surface and Assembly Modeling]] supplies the named surfaces used by these constraints.
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- [[Finite Element Contact Formulation]] is related because surface-to-surface ties and contact both act on interfaces.
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- [[Abaqus Structural Element Families]] matters for shell-to-solid coupling and structural-to-continuum transitions.
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- [[Abaqus Embedded Elements and Overconstraints]] covers conflicts among constraints and interactions.
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## Sources
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- [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]
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